Hoster 4 question

[cdtoons]

I have use it for 2 shows now and I have had these problems...please help..
1st night- anytime I would add a song from my singers database, the program would crash..this happened 6 times in my 4 hour show.
2nd night - Click on the Icon on the dwsktop and nothing would happen..it gave me program not responding message. I tried to reinstall and it worked yet when laptop was turned off, I could not start the program again. I restored my system to an earlier date so I could get thru the rest of my night...Any thought? thanks for the help...Rex